ajax in asp.net application

AJAX is not a short time out. Although it is popular in some dispute, but have fundamental. AJAX can not say that the language to which they belong, but any language with JavaScript, XML's cross. I think that Ajax is a WEB language and any DHTML, XML's cross that is more suitable.
IE is only part of the following discussion. 
Ajax applications use in 3 parts (personal view): 
1, the data (usually by IE Microsoft.XMLHTTP component built to get or send data); 
2, the event (the event that the client-side event, if it is server-side events, meaning there is less AJAX); 
3, binding (for the time being called to bind it, it can be said to show, generally through DHTML to complete.) 
From above, Ajax components and the use of the Microsoft.XMLHTTP DHTL. In fact, another part is the server-side processing. 
A simple example is the prototype for the most simple, is to obtain data: 

a.aspx reads as follows: 
aaaaab.aspx made